/* =========================================================

// jquery.innerfade.js

// Datum: 2008-02-14
// Firma: Medienfreunde Hofmann & Baldes GbR
// Author: Torsten Baldes
// Mail: t.baldes@medienfreunde.com
// Web: http://medienfreunde.com

// 03/04/09: Modified by jrheard http://jrheard.com
// Removed random functionality 'cause we don't need it;
// added $.skip functionality

// based on the work of Matt Oakes http://portfolio.gizone.co.uk/applications/slideshow/
// and Ralf S. Engelschall http://trainofthoughts.org/

 *
 *  <ul id="news"> 
 *      <li>content 1</li>
 *      <li>content 2</li>
 *      <li>content 3</li>
 *  </ul>
 *  
 *  $('#news').innerfade({ 
 *	  animationtype: Type of animation 'fade' or 'slide' (Default: 'fade'), 
 *	  speed: Fading-/Sliding-Speed in milliseconds or keywords (slow, normal or fast) (Default: 'normal'), 
 *	  timeout: Time between the fades in milliseconds (Default: '2000'), 
 *	  type: Type of slideshow: 'sequence', 'random' or 'random_start' (Default: 'sequence'), 
 * 		containerheight: Height of the containing element in any css-height-value (Default: 'auto'),
 *	  runningclass: CSS-Class which the container get’s applied (Default: 'innerfade'),
 *	  children: optional children selector (Default: null)
 *  }); 
 *

// ========================================================= */


(function($) {

    $.fn.innerfade = function(options) {
        return this.each(function() {   
            $.innerfade(this, options);
        });
    };

    $.innerfade = function(container, options) {
        window.innerFade = {};
      
        var settings = {
        		'animationtype':    'fade',
            'speed':            'slow',
            'type':             'sequence',
            'timeout':          2000,
            'containerheight':  'auto',
            'runningclass':     'innerfade',
            'children':         null
        };
        if (options)
            $.extend(settings, options);
        if (settings.children === null)
            var elements = $(container).children();
        else
            var elements = $(container).children(settings.children);
        if (elements.length > 1) {
            $(container).css('position', 'relative').css('height', settings.containerheight).addClass(settings.runningclass);
            for (var i = 0; i < elements.length; i++) {
                $(elements[i]).css('z-index', String(elements.length-i)).css('position', 'absolute').hide();
            };
            
            window.innerFade.current = 1;
            window.innerFade.last = 0;
            
            window.innerFade.timeout = setTimeout(function() {
                $.innerfade.next(elements, settings);
            }, settings.timeout);
            $(elements[0]).show();
            
            $("div#slideshow img.arrow").bind("click", function() { 
              $.innerfade.skip(elements, settings); 
            });
				}
    };
    
    $.innerfade.skip = function(elements, settings) {
      window.clearTimeout(window.innerFade.timeout);
      $.innerfade.next(elements, settings);
    };
    
    $.innerfade.updateIndices = function(elements) {
      if ((window.innerFade.current + 1) < elements.length) {
          window.innerFade.current = window.innerFade.current + 1;
          window.innerFade.last = window.innerFade.current - 1;
      } else {
          window.innerFade.current = 0;
          window.innerFade.last = elements.length - 1;
      }      
    };    

    $.innerfade.next = function(elements, settings) {
        if (settings.animationtype == 'slide') {
            $(elements[window.innerFade.last]).slideUp(settings.speed);
            $(elements[window.innerFade.current]).slideDown(settings.speed);
        } else if (settings.animationtype == 'fade') {
            $(elements[window.innerFade.last]).fadeOut(settings.speed);
            $(elements[window.innerFade.current]).fadeIn(settings.speed, function() {
							removeFilter($(this)[0]);
						});
        } else
            alert('Innerfade-animationtype must either be \'slide\' or \'fade\'');
            
        $.innerfade.updateIndices(elements);
        
        window.clearTimeout(window.innerFade.timeout);
        window.innerFade.timeout = setTimeout((function() {
            $.innerfade.next(elements, settings);
        }), settings.timeout);
    };  

})(jQuery);

// **** remove Opacity-Filter in ie ****
function removeFilter(element) {
	if(element.style.removeAttribute){
		element.style.removeAttribute('filter');
	}
}